CVE-2010-4398

HIGHNVD 7.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-03-28), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
7.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 9%CVSS: 7.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Stack-based buffer overflow in the RtlQueryRegistryValues function in win32k.sys in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, and R2, and Windows 7 allows local users to gain privileges, and bypass the User Account Control (UAC) feature, via a crafted REG_BINARY value for a SystemDefaultEUDCFont registry key, aka "Driver Improper Interaction with Windows Kernel Vulnerability."

CVSS v3
7.8
EG Score
9.0(high)
EPSS
94.5%
KEV
⚠ Exploited

Published

December 6, 2010

Last Modified

April 21, 2026

Advisory Details (6)

Auto-updated May 19, 2026
🔬 Proof of concept available. No patch confirmed yet. Sources: cert.
generic
http://www.securitytracker.com/id?1025046
generic
http://www.securityfocus.com/bid/45045
cert

VU#529673 - Microsoft Windows RtlQueryRegistryValues() does not adequately validate registry data

http://www.kb.cert.org/vuls/id/529673
generic🟡 PoC Available

Microsoft Windows Vista/7 - Local Privilege Escalation (UAC Bypass) - Windows local Exploit

http://www.exploit-db.com/exploits/15609/
generic

About Secunia Research | Flexera

http://secunia.com/advisories/42356
generic🟡 PoC Available

Privilege escalation 0-day in almost all Windows versions

http://isc.sans.edu/diary.html?storyid=9988

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 86× in last 7d / 374× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 628 total refreshes for this CVE.

  1. 2026-07-16 02:29 UTCEG score recompute
  2. 2026-07-16 02:29 UTCGHSA enrichment
  3. 2026-07-15 22:08 UTCEG score recompute
  4. 2026-07-15 22:08 UTCGHSA enrichment
  5. 2026-07-15 17:45 UTCEG score recompute
  6. 2026-07-15 17:45 UTCGHSA enrichment
  7. 2026-07-15 16:54 UTCEPSS rescore
  8. 2026-07-15 16:54 UTCEPSS rescore
  9. 2026-07-15 16:49 UTCCISA KEV update
  10. 2026-07-15 15:04 UTCCISA KEV update
  11. 2026-07-15 13:23 UTCEG score recompute
  12. 2026-07-15 13:23 UTCGHSA enrichment
  13. 2026-07-15 09:00 UTCEG score recompute
  14. 2026-07-15 09:00 UTCGHSA enrichment
  15. 2026-07-15 04:38 UTCEG score recompute
  16. 2026-07-15 04:38 UTCGHSA enrichment
  17. 2026-07-15 01:55 UTCEPSS rescore
  18. 2026-07-15 00:11 UTCEG score recompute
  19. 2026-07-15 00:11 UTCGHSA enrichment
  20. 2026-07-14 19:50 UTCEG score recompute
  21. 2026-07-14 19:49 UTCGHSA enrichment
  22. 2026-07-14 18:05 UTCCISA KEV update
  23. 2026-07-14 15:27 UTCEG score recompute
  24. 2026-07-14 15:27 UTCGHSA enrichment
  25. 2026-07-14 11:03 UTCEG score recompute
Show 75 more
  1. 2026-07-14 11:03 UTCGHSA enrichment
  2. 2026-07-14 06:42 UTCEG score recompute
  3. 2026-07-14 06:41 UTCGHSA enrichment
  4. 2026-07-14 02:18 UTCEG score recompute
  5. 2026-07-14 02:17 UTCGHSA enrichment
  6. 2026-07-13 22:25 UTCEPSS rescore
  7. 2026-07-13 21:57 UTCEG score recompute
  8. 2026-07-13 21:57 UTCGHSA enrichment
  9. 2026-07-13 17:36 UTCEG score recompute
  10. 2026-07-13 17:36 UTCGHSA enrichment
  11. 2026-07-13 17:07 UTCCISA KEV update
  12. 2026-07-13 13:15 UTCEG score recompute
  13. 2026-07-13 13:15 UTCGHSA enrichment
  14. 2026-07-13 08:54 UTCEG score recompute
  15. 2026-07-13 08:54 UTCGHSA enrichment
  16. 2026-07-13 04:33 UTCEG score recompute
  17. 2026-07-13 04:33 UTCGHSA enrichment
  18. 2026-07-13 00:11 UTCEG score recompute
  19. 2026-07-13 00:11 UTCGHSA enrichment
  20. 2026-07-12 19:50 UTCEG score recompute
  21. 2026-07-12 19:50 UTCGHSA enrichment
  22. 2026-07-12 15:29 UTCEG score recompute
  23. 2026-07-12 15:29 UTCGHSA enrichment
  24. 2026-07-12 11:07 UTCEG score recompute
  25. 2026-07-12 11:07 UTCGHSA enrichment
  26. 2026-07-12 06:46 UTCEG score recompute
  27. 2026-07-12 06:46 UTCGHSA enrichment
  28. 2026-07-12 02:22 UTCEG score recompute
  29. 2026-07-12 02:22 UTCGHSA enrichment
  30. 2026-07-11 22:01 UTCEG score recompute
  31. 2026-07-11 22:01 UTCGHSA enrichment
  32. 2026-07-11 17:40 UTCEG score recompute
  33. 2026-07-11 17:40 UTCGHSA enrichment
  34. 2026-07-11 13:19 UTCEG score recompute
  35. 2026-07-11 13:19 UTCGHSA enrichment
  36. 2026-07-11 08:58 UTCEG score recompute
  37. 2026-07-11 08:58 UTCGHSA enrichment
  38. 2026-07-11 08:22 UTCEPSS rescore
  39. 2026-07-11 04:34 UTCEG score recompute
  40. 2026-07-11 04:34 UTCGHSA enrichment
  41. 2026-07-11 00:12 UTCEG score recompute
  42. 2026-07-11 00:12 UTCGHSA enrichment
  43. 2026-07-10 19:48 UTCEG score recompute
  44. 2026-07-10 19:48 UTCGHSA enrichment
  45. 2026-07-10 17:52 UTCCISA KEV update
  46. 2026-07-10 15:27 UTCEG score recompute
  47. 2026-07-10 15:26 UTCGHSA enrichment
  48. 2026-07-10 11:04 UTCEG score recompute
  49. 2026-07-10 11:04 UTCGHSA enrichment
  50. 2026-07-10 06:41 UTCEG score recompute
  51. 2026-07-10 06:41 UTCGHSA enrichment
  52. 2026-07-10 02:20 UTCEG score recompute
  53. 2026-07-10 02:20 UTCGHSA enrichment
  54. 2026-07-09 22:00 UTCEG score recompute
  55. 2026-07-09 22:00 UTCGHSA enrichment
  56. 2026-07-09 17:38 UTCEG score recompute
  57. 2026-07-09 17:38 UTCGHSA enrichment
  58. 2026-07-09 13:13 UTCEG score recompute
  59. 2026-07-09 13:13 UTCGHSA enrichment
  60. 2026-07-09 08:53 UTCEG score recompute
  61. 2026-07-09 08:52 UTCGHSA enrichment
  62. 2026-07-09 04:31 UTCEG score recompute
  63. 2026-07-09 04:31 UTCGHSA enrichment
  64. 2026-07-09 00:10 UTCEG score recompute
  65. 2026-07-09 00:09 UTCGHSA enrichment
  66. 2026-07-08 19:49 UTCEG score recompute
  67. 2026-07-08 19:48 UTCGHSA enrichment
  68. 2026-07-08 15:25 UTCEG score recompute
  69. 2026-07-08 15:25 UTCGHSA enrichment
  70. 2026-07-08 15:10 UTCEPSS rescore
  71. 2026-07-08 15:10 UTCEPSS rescore
  72. 2026-07-08 11:04 UTCEG score recompute
  73. 2026-07-08 11:04 UTCGHSA enrichment
  74. 2026-07-08 06:44 UTCEG score recompute
  75. 2026-07-08 06:43 UTCGHSA enrichment

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-15609✓ verified
    First seen Nov 24, 2010

    Microsoft Windows Vista/7 - Local Privilege Escalation (UAC Bypass)

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2010-4398?
CVE-2010-4398 is a high vulnerability published on December 6, 2010. Stack-based buffer overflow in the RtlQueryRegistryValues function in win32k.sys in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, and R2, and Windows 7 allows local users to gain privileges, and bypass the User Account Control…
When was CVE-2010-4398 disclosed?
CVE-2010-4398 was first published in the National Vulnerability Database on December 6, 2010, with the most recent update on April 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2010-4398 actively exploited?
Yes. CISA added CVE-2010-4398 to the Known Exploited Vulnerabilities catalog on March 28, 2022, affecting Microsoft Windows. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2010-4398?
CVE-2010-4398 has a CVSS v3 base score of 7.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2010-4398?
CVE-2010-4398 affects Microsoft Windows. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2010-4398?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2010-4398, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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